Great Sand Dunes National Park.near Alamosa, Colorado Categories: Landscape Travel Tags: #Landscape #Mountains #Nature #Sand #Scenery

“Avalanches” of sand.Great Sand Dunes National Park.near Alamosa, Colorado Categories: Landscape Travel Tags: #Landscape #National Park #Nature #Sand #Scenery

Microscopic view of sand particles at the Great Sand Dunes visitor center. Tags: #Sand

Great Sand Dunes National Park and Preserve welcome sign.near Alamosa, Colorado Categories: Travel Tags: #Mountains #National Park #Nature #Sand #Signs #Welcome Sign